Koch, R. (1955). The book of signs: Which contains all manner of symbols used from the earliest times to the middle ages by primitive peoples and early Christians (Unabridged republ. of the English transl., London, 1930.). Dover Publ.
Chicago-Zitierstil (17. Ausg.)Koch, Rudolf. The Book of Signs: Which Contains All Manner of Symbols Used from the Earliest Times to the Middle Ages by Primitive Peoples and Early Christians. Unabridged republ. of the English transl., London, 1930. New York, NY: Dover Publ, 1955.
MLA-Zitierstil (9. Ausg.)Koch, Rudolf. The Book of Signs: Which Contains All Manner of Symbols Used from the Earliest Times to the Middle Ages by Primitive Peoples and Early Christians. Unabridged republ. of the English transl., London, 1930. Dover Publ, 1955.